I have solved my guide/flip issues by using the Generic ASCOM hub but the roof control is being a bit of a problem.
First I tried selecting POTH in SGP - dome options (profile manager):
The POTH popup control allowed manual open and close with that but did not seem to respond to SGP commands and, in fact, did not show as connected in SGP.
I have tried both selection of POTH directly in SGP as well as selecting Generic Hub under “dome” in SGP and then POTH under Generic Hub in it’s dialog.
The roof is controlled by a Maxdome board so I tried selecting Maxdome directly in SGP dome options (profile manager) but that also does not work.
In each case the control panel "other " tab shows all the options greyed out except for “slave settings”.